/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.sentry;

import java.io.FilePermission;
import java.security.Permission;
import java.util.Locale;

/**
 * Writing this in Kotlin produced stackoverflows because Kotlins CharSequence.contains inside
 * checkPermission requests a FilePermissions for StringsKt.class, which again calls
 * checkPermission.
 *
 * @since 2021-06-25
 */
public final class DenyReadFileSecurityManager extends SecurityManager {
    private final String pathname;

    public DenyReadFileSecurityManager(String pathname) {
        this.pathname = pathname;
    }

    @Override
    public void checkPermission(Permission permission) {
        if (permission instanceof FilePermission
            && permission.getName() != null
            && permission.getName().contains(pathname)) {
            throw new SecurityException(String.format(Locale.ROOT, "Reading file %s is not allowed", pathname));
        }
    }
}
